I Peter 3:15 Reads: "but sanctify Christ as Lord in your hearts, always being ready to make a defense to everyone who asks you to give an account for the hope that is in you, yet with gentleness and reverence;" (emphasis added) Other versions read "...give an answer,".

The word for "defense" is the Greek apologia which means to "defend or vindicate". This is where we get our English word "apology". Though we have come to associate an apology with an expression of regret or remorse, to apologize literally means to answer for or defend one's words and actions.

Biblical Apologetics is a discipline that is dedicated to a "defense" of God's Word through study of Scripture and examination of other evidences.